Main difference, will be that ours is at night. This behavior is very common with these type of fish, especially when they get hooked. So my question is what lighting would be recommended to get a decent exposure. In most cases the fish are 20-30 feet away, so my 2 600EX's are not very handy here, possibly a spotlight? I have 1 assistant on the boat that can give me help with this lighting. The camera + lens being used is the 5D Mark III and 70-200mm f/2.8L IS II. I got a few hours to run to a local dive shop (spotlight?) or to my local photog shop if anyone has any suggestions.

Anyone else have a suggestion? We are not confident the Better Beamer will work, we have purchased it and are waiting, but have another trip tonight and hoping we can get some better suggestions if possible!